baber/WOPTO huggingface dataset:
Patent FR-2008653-A1 (FR)
IPC: H03H7/01
Filed: 1969-05-13
Abstract: 1,262,184. Harmonic filters for A.C. power lines; static converters. GENERAL ELECTRIC CO. 13 May, 1969 [16 May, 1968], No. 24276/69. Heading H2F. A harmonic filter for an A.C. power system particularly where connected to static converters in an H.V.D.C. link, comprises LC shunt filters 8, 9, 10, 11 (Fig. 1) to suppress individual characteristic harmonics i.e. harmonics at N times the fundamental frequency where N = 6KŒ1 for six phase converter operation and K is a positive integer, e.g. 5th, 7th etc. respectively, and an additional filter 12 to suppress non-characteristic harmonics i.e. all the remaining harmonics which can arise and produce parallel resonance. The shunt filters 8, 9, 10, 11 are tuned to provide a low impedance for predetermined frequencies to be suppressed. However, at frequencies below that for which a filter is tuned the dominant impedance will be that of the capacitive element. This impedance together with that of power factor correction capacitors 32, 33 etc. may interact with the system inherent inductance 2 to produce parallel resonance. If this occurs at a non-characteristic harmonic frequency even a small current can produce a large harmonic distortion of the system voltage. The filter 12 includes a series LC circuit 26, 25 (selected to provide a low impedance to a specific non-characteristic harmonic e.g. 4th at which parallel resonance may be expected) in which R27 represents the resistance of L26, a blocking filter 29 tuned to the fundamental f and a resistor 28 to damp the non-characteristic component of system voltage. In another embodiment, Fig. 2 (not shown), the filters are connected to the A.C. lines by way of tertiary windings of a transformer which couples a rectifier bridge to the A.C. lines. The converter bridges may be controllable valves or solid state semi-conductors.
Patent FR-2027184-A1 (FR)
Title: Preparation of alcohols
Inventor: TUMMES H
IPC: C07C45/50
Filed: 1969-12-19
Abstract: In the reaction of olefines with carbon monoxide and hydrogen with cobalt catalyst (the oxo synthesis) formates acetals and high boiling-point products are formed in addition to the aldehydes and alcohols. The mixture of products is treated with water in the presence of a large surface area material, pref. alumina or active charcoal at 280 - 320 degrees C to hydrolyse the esters.
Patent FR-2105062-A1 (FR)
Title: Stopper for fuel rod channels of nuclear - reactor
IPC: G21C13/067
Filed: 1970-09-21
Abstract: A tapered hollow body seats an internal taper near the entrance of the channel and has an internally mounted vertical lead screw on which is mated a clamping ring, running in axial guides to prevent its turning. This ring carries a number of spring loaded stays extending at a slope out of the body of the seal, whose free ends have blocks or protrusions which locate on an internal groove in the tube wall when the screw is turned by a drive shaft in the loading gear, to which it is coupled. Reverse rotation of the screw disengaged the stays from the groove.
Patent FR-2135392-A1 (FR)
Title: Capillary braxing - for copper piping avoids leaving flux inside the brazed tubes
IPC: F16L13/08
Filed: 1971-05-03
Abstract: Process for capillary brazing of two tubes placed one inside the other, in which in the common length of the tubes tehre is created in >=1 place an annular zone which causes a discontinuity in the capilliarily effect of the flux and the brazing alloy between the walls of the tubes.
Patent FR-2171862-A1 (FR)
Title: Deep-freezing of bulk fruit and vegetables - pending final mfr
IPC: A23B7/05
Filed: 1972-02-11
Abstract: The freshly-picked prods. are subjected to the action of a gaseous atmos., rich in SO2 made by burning S in the closed recipient. The prods. are then de-gassed and deep-frozen; they can be maintained in bulk in this condition as long as desired. When mfg. is started, any remaining gas is eliminated during or after thawing. Long conservation in the bulk state is thus possible, the final filling into cans, glass and plastic jars etc. can be postponed until it is convenient to operate the mfg. plant.
Patent FR-2171426-A1 (FR)
Title: Oil-water mixture disposal - by open flame evaporating water and burning oil
IPC: F23G7/05
Filed: 1973-02-12
Abstract: Waste oil-water mixture are disposed of by partial vaporization in an evaporator and by combustion in an open flame of both the emitted vapours and of the concd. oil-water mixture. The vapours from the evaporator are superheated in a heat exchanger prior to heating in the flame. The result is that the water evaporates, org. substances are burned and inorganic substances are deposited.
Patent FR-2219399-A1 (FR)
Title: Planimeter for area measurement of skins - with auxiliary belt to ensure flattening
IPC: G01B11/28
Filed: 1973-02-28
Abstract: Instrument comprises a frame supporting two rollers; endless cables are stretched between them to form a conveyor for the skins whose surface area is to be measured. A photocell bridge is arranged beneath the upper strand of the conveyor, with a light source vertically above. The passage of the skins between the cells and the light, cuts the latter from some of the cells; an electronic calculator, allowing for the speed of the conveyor, gives an indication of the surface area of the skins. But to know the exact size it is essential that the skins should be absolutely flat; this is achieved by means of an auxiliary conveyor, driven by another motor, and supported on an auxiliary frame. This is fitted with gudgeon pins which slide in the main frame so that the auxiliary conveyor is free to move vertically to permit the passage of the skins, and to flatten them, whatever their thickness. As the skins are perfectly flattened during their passage over the photocells, their true surface area is accurately measured. An auxiliary drum, with deep grooves so that it has a higher peripheral speed than the others, is placed in the leading position so that it has a flattening effect on any raised edges of the skins to be measured.
Patent FR-2222110-A1 (FR)
Title: Panel units to build a toboggan track - are made from thermoplastic resin, give straights and curves from same panels
IPC: E01C13/10
Filed: 1973-03-23
Abstract: Each panel is an equal angled trapezium with one parallel side half the length of the other. For straight runs, units are joined so that adjacent panels give alternatively a long side and a short side. For curves, they are joined long side to long side. Each panel is curved to give one half depth of the track. Moulded in each face are stiffening ribs and location ribs, together with drainage holes and joining holes. Units are joined with headed pegs.
Patent FR-2223519-A1 (FR)
Title: Method of unblocking frozen drains - involves pumping hot water which is fed into drain at point of blockage
IPC: E03B7/14
Filed: 1973-03-28
Abstract: The apparatus consists of a flexible pipe with an injection unit attached to one end. The other end is joined to the outlet of a heating coil which is heated by means of a burner using liquified gas. The inlet of the heating coil is connected to a simple pump which controls the flow of a water tank which acts as a reservoir. The injection unit is inserted into the drain as far as the ice blockage. Hot water is then pumped through it until the ice melts.
Patent FR-2231634-A1 (FR)
Title: Refractory material with thermal shock resistance - made from cement plus heat-resisting oxides and ceramic fibres
IPC: C04B35/10
Filed: 1973-05-30
Abstract: In a material with controlled porosity, consisting of a dispersion of heat-resisting substances (pref. including 10% min. ceramic fibres) in a refractory cement, and with high resistance to repeated thermal shock, the new feature is that the material is fired without sintering, using a temp. below 1000 degrees C., the retained porosity being responsible for the high shock-resistance. The heat-resisting substances include lamellar alumina, corundum stabilised ZrO2, SiC and the fibres can be a cpd. of Al2O3-SiO2, ZrO2, Al2O3, a Si cpd. or a mixt. of these fibres. The materials are made by a wet process consisting of mixing a refractory cement with the heat-resisting substances and water, then adding an emulsifier and stabiliser before moulding, drying and firing.
Patent FR-2196299-A1 (FR)
Title: Hydraulic plaster mix - contg untreated chemical gypsum whose hydration water causes setting
IPC: C04B28/16
Filed: 1973-08-16
Abstract: The amount of chemical gypsum contains the stoichiometrically necessary quantity of water for the final setting, or a multiple thereof; other aggregates are opt. present as well. The chamical gypsum may come from phosphoric acid mfr. The treated plaster is opt. reactivatable anhydrite II, e.g. as Keene's cement. Moulding is opt. performed by compression at 150-450 kg/cm2. Cheap high strength moulding results.
Patent FR-2203708-A1 (FR)
IPC: C09J7/20
Filed: 1973-10-18
Abstract: 1449666 Coated fabrics W C HELLER 28 Sept 1973 [20 Oct 1972] 45544/73 Heading B2E [Also in Divisions B4 and B5] A material for heat-sealing two bodies 12, 14 having bonding incompatibility comprises an integral layer of strands 27 at least partly embedded in each of layers 22, 24 which are heat-sealable to bodies 12, 14 respectively but not to each other, at least one of layers 22, 24 having dispersed therein a particulate susceptor heatable upon exposure to indirectly applied energy. In a preferred embodiment for bonding a polypropylene sheet 12 to a nylon eye fastener 14, layer 22 is of polypropylene, layer 24 is of nylon and the strands 27 constitute an open-weave glass fibre fabric. One or both of layers 22, 24 may be rendered susceptible to heating by high-frequency magnetic or dielectric heating by incorporating magnetic particles, e.g. Fe 3 O 4 , gamma-Fe 2 O 3 . CrO 2 , or dielectric particles, e.g. polymers and copolymers of vinyl or vinylidene chloride or fluoride. The particulate material may be incorporated by calendering and or extrusion. As shown, particulate material 28 is present only in the layer 24 having the higher heatsealing temperature. The strands 27 may be so embedded that the layers 22, 24 are spaced apart or contacted in the fabric interstices. Contact may be improved by coating the weft and warp with the materials of layers 22, 24 before the fabric is woven. The embodied material is made by softening the layer 22 on a heating plate or by indirect energy, applying the fabric of strands 27 with pressure if necessary, and applying the layer 24 as a melt or solution by casting, extrusion, spraying or brushing. If desired, both layers may be applied as softened solid layers or both in liquid or solution form. The material may be hotpressed to reduce its thickness. One or both of layers 22, 24 may be pigmented. Other suitable materials for the layers are listed, and the woven fabric may be replaced by a roving or knitted fabric. Reference has been directed by the comptroller to Specification 1087815.
Patent FR-2250574-A1 (FR)
Title: Scrap automobile handling system - uses entire weight of scrap for feeding and shreds and compresses
IPC: B23D31/00
Filed: 1973-11-12
Abstract: The system is particularly for handling old car bodies, their surfaces being first divided before compression. The entire weight of the body is used to contribute to its feeding. Indentations or breakages are caused by tears or perforations along the body surface, and preliminary shredding is accompanied by progressive rolling. The pre-shredded and compressed materials are removed from the rolling zone continuously in the form of a virtually continuous strip which is then delivered in separate sections, typically by cutting up the strip into blocks. The cars are fed downwardly between two rows of parallel pre-shredding rolls.
Patent FR-2278461-A1 (FR)
Title: Multiple circular saw installation for timber working - has adjustable height and inclination roller feed table
IPC: B27B5/24
Filed: 1973-11-23
Abstract: A portal frame is constructed from rolled steel sections, the bridge section providing a track for two or more motorised circular saw heads. These can be adjusted to cut longitudinally, transversely or an angle between. Additional motorised saw units may be fitted to the portal frame uprights. Rails on the floor form tracks for a trolley, moveable underneath and between the portal frame by means of a motor at one end driving a cable attached to the trolley. The trolley top is removable in sections and provided with bearers and clamps for the timber, the operator stands to one side.
Patent FR-2209501-A1 (FR)
Title: Polyurethane foam substrates for plant growth - which slowly release acid gps. and are softened when satd. with water
IPC: A01G31/00
Filed: 1973-12-07
Abstract: Substrates for growing plants comprise a hydrophilic, open-celled, ester-gp.-contg. polyurethane foam with a density of 8-50 kg./m2 which, when kept for 2 months in a water-satd. state at 20 degrees C, liberates >=1 meq./kg. of acid gps. formed by hydrolysis of the ester gps. and thereby undergoes softening. The liberated acid gps. counteract unwanted alkalization and the softening prevents root damage when young plants are removed from the substrate.
Patent FR-2216268-A1 (FR)
Title: Catalytic hydrogenation of 6-methylenetetracyclines - using rhodium-tert phosphine complex catalyst giving a stereospecific prod. in high yield
IPC: B01J31/00
Filed: 1974-02-01
Abstract: 6-Methylenetetracyclines are hydrogenated by treating a tetracycline with an exocyclic methylene group with H2 in the presence of a catalyst consisting of a complex of rhodium with a tertiary phosphine of formula PR1R2R3, (where R1 and R2 are phenyl opt. substd. by e.g. alkyl, alkoxy, halogen or dialkylamino gps; and R3 and R gamma are alkyl or benzyl gp), in a solvent which dissolves both the tetracycline and the catalyst. The process produces little or no undesired anhydrotetracyclines, the reduction is practically quantitative and the catalyst is stereoselective to the production of the 6 alpha-epimer.
Patent FR-2264192-A1 (FR)
Title: Pulsating fuel injector for diesel engines - has pressure applied to injector plunger via pneumatic connection to engine
IPC: F02M37/12
Filed: 1974-03-15
Abstract: A free piston divides a cylinder into two parts, one working as a normal compression ignition engine with a direct injection system actuated by compressed air. The second chamber is filled with air which acts as a return spring to the piston. The injector pump consists of a pneumatic plunger regulated by the lower part of the piston provided with an inner chamber between the recessed outlet walls of the piston and the cylinder. The length of the recess is the same as the difference between the largest and smallest piston stroke. When the piston reaches b.d.c. compressed air enters the inner piston chamber and is able to move the pump plunger when the inner piston chamber outlet aligns with the plunger communication passage.
Patent FR-2226381-A1 (FR)
Title: Alpha alkyl aliphatic carboxylic acids - prepd. by dimerising alcohols then oxidative alkaline fusion
IPC: C07C53/128
Filed: 1974-04-19
Abstract: Carboxylic acids of formula:- RCH2CH2CH(R)COOH, where R is satd. alkyl, mainly 4-24, pref. 6-13C straight chain are prepd by dimerising alcohols of formula R.CH2-CH2OH to form RCH2CH2CH(R)CH2OH, which is oxidatively alkaline fused to the salt of the above acid, which is then acidified. KOH and NaOH, pref. in a eutectic mixt. ratio, are pref. used for the fusion. The prods are used as surfactants, anti-foamers, lubricants, emulsifiers etc. They have a low m.pt and turbidity to replace oleic acid, which is unstable to oxidn.
Patent FR-2269703-A1 (FR)
Title: Practice grenade with detonator charge - has shock absorber for detonation and shot breaker disc ahead of ball charge
IPC: F42B8/18
Filed: 1974-05-03
Abstract: A practice grenade has a detonator charge actuated by a percussion detonator, inside a non-detonator portion at the front, containing a shock absorber for the shot charge housed in a cylindrical stem at the rear, with a shot-breaker device. The shock absorber is a metal cylinder enclosed by a resilient sleeve holding a piston which is braked by a deformable collar to absorb the shock resulting from the detonation. The shot breaker is a disc with a protuberance directed towards the interior of the cylindrical stem which is forced onto the shot charge. This protuberance consists mainly of a conical portion, and the disc which carries it has grooves around its periphery, the nothces being on the side opposite to the opening through the stem.
Patent FR-2231509-A1 (FR)
Title: Vulcanisation of car radiator hose - on heated core with external insulation to give rapid heating
IPC: B29C35/00
Filed: 1974-05-27
Abstract: A semifinished rubber tube, esp. for a car radiator hose, is vulcanised as follows: the hose is mounted as a tight fit on a metal core which generates the heat, the outside of the hose being insulated to prevent heat loss, so that the hose rises to the same temp. as the core. The core is pref. a metal tube, with internal heating esp. by steam.
Patent FR-2232355-A1 (FR)
Title: Dispenser for water treatment additives - has solids chamber controlled liquid inlet and controlled soln outlet
IPC: B01F15/04
Filed: 1974-06-10
Abstract: An appts. for dissolving and dispensing soluble solids, e.g., calcium hypochlorite, comprises a closed vessel subdivided by a partition into upper and lower chambers, the upper chamber being further subdivided by a generally vertical partition into first and second chambers; an inlet into the upper part of the first chamber feeds incoming liq. into a pivotally mounted, lockable vessel, which can be periodically tilted to discharge the liq. into this first chamber; while flow regulator permits controlled flow of liq. from the lower part of the first chamber contains a magazine having a perforated bottom; this magazine contains the soluble solids so that the liq. entering the lower pa*t of the second chamber can percolate upwards through the perforated bottom of the magazine into the solids above; liq. is discharged from this second chamber, below the perforated floor, through an outlet pipe, pref. having a weir around its inlet, into the lower chamber of the entire unit. This lower chamber has an outlet and a second flow regulator, esp. a float valve, for finally discharging the soln.
Patent FR-2276468-A1 (FR)
Title: Engine fuel control system using pressure injection - compensates for variable fuel tank pressure and high air pressure drop
Inventor: MENNESSON FRANCOIS
IPC: F02M69/20
Filed: 1974-06-27
Abstract: An engine fuel supply system has a mechanism with an additional throttle valve (3) upstream of the main throttle valve (2) which is manually operated. The auxiliary valve is operated from a differential pressure bellows (6) which reacts to the pressure difference existing between the space between the valves (9) and upstream of the auxiliary valve (14). The auxiliary valve opens with increased air flow. Similarly the main diaphragm valve maintains constant fuel supply when the air pressure is constant thus maintaining a constant mixture strength. The main diaphragm is not in direct contact with the fuel and therefore the risk of leakage is reduced.
Patent FR-2276210-A1 (FR)
Title: Bicycle anti theft device - cable housed inside saddle support tube extends for locking around pear wheel rim
IPC: B62H5/00
Filed: 1974-06-25
Abstract: An anti theft device for a bicycle consists of a strong flexible cable (2) which can be retained inside the telescopic saddle support tube (4 5) forming part of the frame of the bicycle by means of a fitting (3) at one end of the cable and which carries a locking device (7, 8) at the other end of the cable, so that the cable can be partially extracted from the tube, until it is sufficiently long to be doubled around the rim of the rear wheel and locked by the locking device. A spring can be fitted to hold the cable in the retracted position while not in use. In an alternative design, the cable is housed inside a separate tube which is attached to the saddle support tube.
Patent FR-2238129-A1 (FR)
Title: Electric compressor refrigerator power supply - incorporated in heavy vehicles has variable motor-to-compressor coupling
IPC: F25B49/02
Filed: 1974-07-17
Abstract: Electric compressor refrigerator can be supplied from multi voltage level systems and the cooling output is controlled via the compressor r.p.m., for international lorry traffic. The electric drive is connected constantly to the battery load generator and also, depending on the available residual shaft power and/or supplied cooling power, with the compressor, variably according to the time or loading. Preferably the connection between the electric drive and the compressor is via a hydraulic or magnetic changeover coupling, or via a coupling with constant r.p.m. adjustment, e.g. a hydrodynamic converter or a turbo regulator coupling.
Patent FR-2279102-A1 (FR)
Title: Determination of chloro-methyl methyl ether - by reacting with alkali metal salt of hydroxy compound, chromatographing and detecting
Inventor: AULT ELDON FRANK
IPC: G01N31/00
Filed: 1974-07-19
Abstract: Presence of chloromethyl methyl ether (I) or bis-(chloromethyl) ether (II) in a fluid is determined by (a) reacting (I) or (II) with (III) an alkali metal salt of a 1-4 alcohol, phenol, alkoxyphenol, alkylphenol, chlorophenol, bromophenol, chloropyridinol, or chlorothiophenol, this salt being dissolved in a 1-4C alcohol, (b) passing the reaction prod. through a gas chromatographic column, (c) passing the eluted components thorugh a detector, and (d) presenting the outout from this detector on a reading device. The method shows good sensibility, stability and specifically for the determination of small amts. of (I) and (II) in fluids. It is esp. for determining (I) and/or (II) at the same time as other formaldehyde-generating components present in a stream of (I) in order to precisely eqilibriate the chloromethylation reactions in the prodn. of ion exchange resins.
Patent FR-2246021-A1 (FR)
Title: Storage cell for field or dynamic storage cells - has memory nodule and read-write line
IPC: G11C11/404
Filed: 1974-07-30
Abstract: The first main electrode of the transistor is connected to a memory nodule, its second main electrode is connected to a read-write line and its gate electrode is connected to a first selector line. A tank capacitor has its first side linked to the memory nodule and its second side linked to a second selector line. The transistor can be a field-effect transistor of the enrichment type, whose control electrode is the gate electrode. The second selector line can be connected to the control electrode of a second storage cell.
Patent FR-2241135-A1 (FR)
Title: Colour television tube screens - aluminium layer given surface coating of aluminium nitride
IPC: H01J9/22
Filed: 1974-08-12
Abstract: A screen with an Al film on the luminescent coating and a layer on the Al film to prevent heat reflection back onto the shadow mask, the novelty being that the anti-reflection layer facing the shadow mask is a black Al-AlN complex. This Al-AlN layer is pref. obtd. by initially depositing the Al in a vacuum and then in an atmos. of N2 obtd. by the thermal decompsn. of an azide of Ba, Ca, or Sr. The coating of Al-AlN reduced heat reflection, thus preventing over-heating of the shadow mask which produces distortion or doming causing colour-defects esp. in tubes with 110 degrees deflection angle.